7×11×18mm 43# Unilateral Auto Cutoff Graphite Carbon Brush 100Pcs Pack

7×11×18mm 43# Unilateral Auto Cutoff Graphite Carbon Brush 100Pcs Bulk Pack

Safety Replacement Warning

1. Fully cut off power supply before disassembly and replacement of motor carbon parts. 2. Wear anti-static gloves to avoid static damage to motor coil. 3. Regularly check brush wear to prevent motor burnout.

Product Overview

Model 43 unilateral auto cutoff graphite carbon brush, standard dimension 7×11×18mm, 100 pieces mixed bulk pack (50pcs normal graphite + 50pcs self-stop brushes). Built unilateral safety auto cutoff structure: when graphite wears to limit position, the power tool will automatically cut power to protect internal motor coil from burnout. Made of high-density wear-resistant graphite with tightly embedded copper wire, copper wire not easy to fall off during high-speed rotation. Universal replacement motor spare part for circular saw, marble cutter, angle grinder, electric hammer, drilling machine and multi handheld power tools.

Core Key Advantages

• Unilateral auto cutoff safety design to avoid motor overwear burnout
• High-density solid graphite for long service life & stable conductivity
• Tightly embedded copper wire, anti-fall under long high-speed rotation
• Standard universal size 7×11×18mm, model 4 wide compatibility
• 100pcs economical bulk pack for repair shop daily stock supply
• Suitable for circular saw, marble cutter, angle grinder & more power tools

Full Technical Specifications

Model No.	43#
Single Size	7×11×18mm
Main Material	High Density Wear Resistant Graphite + Copper Wire
Core Feature	Unilateral Auto Cutoff Safety Structure
Pack Quantity	100Pcs (50 Normal + 50 Self-Stop Brushes)
Application	Motor Replacement Parts For Handheld Power Tools

Compatible Equipment Model Codes

Suitable for cutting machine, electric hammer, angle grinder, diamond drill, direct grinder, electric scissors with the below matching model codes: 4SB / 4SB2 / PR-25B / 38 / G15SA2 / Z1E-FFO2 / FF04-110 / FF05-110 / Z1C-FF-38 / S1M-FF02-125B / FF-150A / Z1Z-FF / FF02-90 / S1S-FF-125B / Z1R-FF-150 / J1J-FF-3.2

Installation & Maintenance Tips

1. Disconnect all power before disassembling motor components.
2. Replace two carbon brushes at the same time for balanced motor operation.
3. Check copper wire tightness before installation to avoid poor contact.
4. Store in dry environment to prevent graphite oxidation.

Package Contents

• 100 × Model 43 Graphite Carbon Brushes (Mixed Self-Stop & Normal)
• Multilingual Specification Instruction Card

Frequently Asked Questions

Q1 What is the size of this carbon brush?

A1 Standard dimension 7×11×18mm, universal model 43 for power tool motors.

Q2 What is the function of unilateral auto cutoff?

A1 Automatically cut power when graphite wears to limit position, protect motor coil from burnout.

Q3 How many pieces are included in one pack?

A1 Total 100pcs bulk pack including normal and self-stop graphite brushes.

Q4 Which tools can these brushes fit?

A1 Compatible with circular saw, marble cutter, angle grinder, electric hammer and multi handheld power tools with matching model codes.